Mapping ISO 27001 Controls to NYDFS Part 500 Requirements

Payment entities operating in or subject to regulation by New York face increasingly detailed cybersecurity obligations. The New York Department of Financial Services, or NYDFS, established 23 NYCRR Part 500 to set cybersecurity requirements for covered financial services organizations. The regulation was significantly amended in 2023, with the amended requirements taking effect in stages beginning November 1, 2023.

For payment companies and processors, cybersecurity requirements extend beyond protecting payment applications. Organizations may need to address information security governance, risk assessment, access privileges, multi-factor authentication, asset management, vulnerability management, incident response, third-party service provider security, monitoring, business continuity, and regulatory reporting.

ISO/IEC 27001:2022 provides a structured Information Security Management System, or ISMS, framework for managing information security risks. ISO describes ISO/IEC 27001 as a standard that specifies requirements for an ISMS and applies to organizations across sectors and sizes.

This creates significant areas of alignment between ISO 27001 and NYDFS Part 500. However, ISO 27001 certification does not by itself establish compliance with every NYDFS Part 500 requirement. NYDFS includes regulatory obligations that are specific to covered entities, including certain cybersecurity event notifications, annual regulatory filings, governance responsibilities, and requirements that may apply to Class A companies.

For payment entities, the practical approach is to map overlapping security controls while separately addressing NYDFS-specific regulatory obligations.

Strengthen your information security framework with ISO/IEC 27001 Certification. Build confidence in how your organization manages sensitive information. Connect with INTERCERT to begin your certification journey.

What Is NYDFS Part 500?

NYDFS Part 500 is New York's cybersecurity regulation for covered entities regulated by the New York Department of Financial Services. The regulation establishes cybersecurity requirements intended to protect information systems and nonpublic information from cybersecurity threats.

The regulation follows a risk-based approach while establishing specific cybersecurity requirements that covered entities must address.

Who Is a Covered Entity?

A covered entity is generally an organization operating under a license, registration, charter, certificate, permit, accreditation, or similar authorization under New York's Banking Law, Insurance Law, or Financial Services Law, subject to applicable exemptions.

For payment organizations, determining whether NYDFS Part 500 applies depends on the organization's regulatory status and the specific authorization under which it operates. Money transmitters and certain virtual currency businesses, for example, can fall within the NYDFS regulatory framework.

Payment processors should therefore establish their regulatory status before determining which NYDFS Part 500 requirements apply to their operations.

NYDFS Part 500 Cybersecurity Requirements

NYDFS Part 500 establishes requirements covering several areas of cybersecurity and information security. These include cybersecurity programs, written policies, risk assessments, cybersecurity leadership, access privileges, MFA, asset management, vulnerability management, incident response, third-party service provider security, monitoring, business continuity, and regulatory reporting.

The regulation also requires covered entities to maintain evidence demonstrating their compliance and provides NYDFS with regulatory oversight of cybersecurity practices.

Key Changes Under the 2023 Amendments

The second amendment to 23 NYCRR Part 500 introduced substantial changes to the cybersecurity requirements applicable to covered entities. The amended regulation became effective on November 1, 2023, with certain provisions subject to later effective dates.

The changes expanded requirements involving cybersecurity governance, MFA, access privileges, incident response, business continuity and disaster recovery, cybersecurity training, third-party service providers, and regulatory reporting.

The amended regulation also established additional obligations for certain Class A companies and introduced more detailed requirements relating to cybersecurity event notifications and other regulatory matters.

Requirements Relevant to Payment Companies and Processors

Payment entities should pay particular attention to requirements involving nonpublic information, transaction systems, identity and access management, internet-facing systems, vulnerabilities, third-party providers, security monitoring, incident response, and operational resilience.

Payment businesses often rely on cloud platforms, payment gateways, software providers, infrastructure providers, managed services, and other technology vendors. This makes third-party cybersecurity risk an important consideration under NYDFS Part 500.

Key NYDFS Part 500 Requirements for Payment Entities

Cybersecurity Program

A covered entity must maintain a cybersecurity program designed to protect its information systems and the nonpublic information stored on or processed through those systems.

For payment entities, the cybersecurity program should account for payment applications, customer-facing systems, transaction platforms, APIs, databases, endpoints, cloud environments, network infrastructure, and other technology supporting payment operations.

Cybersecurity Policy

NYDFS Part 500 requires covered entities to maintain a written cybersecurity policy addressing applicable cybersecurity risks.

The policy should reflect the organization's actual technology environment, business activities, cybersecurity risk profile, and regulatory obligations. NYDFS enforcement actions have identified deficiencies involving areas such as cybersecurity policies, risk assessments, asset management, monitoring, incident response, and third-party risk.

Risk Assessment

Risk assessment is a central requirement of NYDFS Part 500. The amended regulation requires the cybersecurity risk assessment to be reviewed and updated as reasonably necessary, at least annually, and when a change in the business or technology causes a material change to the covered entity's cyber risk.

For payment companies, the assessment should consider payment infrastructure, sensitive information, customer-facing applications, privileged accounts, third-party providers, vulnerabilities, technology dependencies, and operational risks.

CISO and Governance Responsibilities

NYDFS Part 500 establishes responsibilities for cybersecurity leadership and senior governance. Covered entities must designate a qualified individual responsible for overseeing and enforcing the cybersecurity program, subject to the requirements of the regulation.

The amended regulation also places greater emphasis on governance oversight. Cybersecurity therefore needs to be addressed as an organizational risk rather than being treated solely as a technical IT function.

Access Privileges and MFA

Access privileges must be managed according to business requirements and cybersecurity risk. The amended NYDFS requirements also establish recurring access privilege review obligations.

Multi-factor authentication is another major requirement under Part 500. Payment entities should evaluate MFA across relevant systems and users, including privileged accounts and remote access scenarios within the applicable regulatory scope.

Asset Management

An accurate asset inventory is fundamental to understanding which systems, applications, devices, and information require protection.

For payment entities, the inventory may include payment platforms, servers, databases, endpoints, APIs, cloud resources, network devices, applications, and other technology assets.

Vulnerability Management

Covered entities must maintain a vulnerability management program appropriate to their cybersecurity risk.

Payment companies should consider vulnerabilities affecting internet-facing applications, APIs, payment platforms, cloud workloads, servers, endpoints, network infrastructure, and other systems within the applicable environment.

Incident Response

NYDFS Part 500 requires covered entities to maintain a written incident response plan addressing cybersecurity events and related responsibilities.

The regulation also establishes specific cybersecurity event notification obligations. A covered entity generally must notify NYDFS as promptly as possible and no later than 72 hours after determining that a qualifying cybersecurity event has occurred.

For payment companies, incident response should account for payment system disruptions, unauthorized access, data compromise, third-party incidents, ransomware, and other cybersecurity events that could affect critical operations or nonpublic information.

Business Continuity and Disaster Recovery

The amended regulation places greater emphasis on business continuity and disaster recovery.

Covered entities must maintain plans addressing the recovery of critical data and information systems, operational resilience, communications, backups, and restoration activities. The regulation also establishes testing requirements for incident response and business continuity and disaster recovery plans.

For payment entities, resilience is particularly important because an extended technology outage can affect transactions, customer access, settlement activities, and other critical services.

Third-Party Service Provider Security

Third-party service provider risk is a significant area under NYDFS Part 500.

Covered entities must maintain policies and procedures addressing the cybersecurity risks associated with third-party service providers. These requirements can involve due diligence, contractual provisions, access controls, data security, incident response, and ongoing oversight.

For payment processors, this can extend to cloud providers, payment technology vendors, software providers, infrastructure providers, managed service providers, and other suppliers.

Monitoring and Logging

Monitoring and logging provide visibility into potentially suspicious activities and cybersecurity events.

Payment entities may need to monitor authentication activity, privileged access, network traffic, application events, endpoint activity, payment infrastructure, and security alerts according to their risk profile.

NYDFS has emphasized the importance of effective monitoring capabilities as part of the cybersecurity environment.

Annual Certification and Regulatory Reporting

NYDFS requires covered entities to submit an annual cybersecurity compliance filing. The filing is generally due by April 15 and addresses the organization's compliance with Part 500 during the previous calendar year.

Depending on the organization's circumstances, the filing involves certification of material compliance or acknowledgement of noncompliance with applicable requirements. Supporting records must be maintained for regulatory examination.

This regulatory filing is separate from ISO 27001 certification.

What Is ISO 27001?

ISO/IEC 27001:2022 is an international standard specifying requirements for an Information Security Management System. It establishes a systematic approach to managing information security risks and protecting information through organizational, people, physical, and technological measures.

ISO 27001 and Information Security Management Systems

An ISMS establishes a structured management framework for identifying information security risks, determining appropriate controls, assigning responsibilities, monitoring performance, and continually improving information security.

For payment companies, an ISMS can cover sensitive information, payment systems, employees, suppliers, applications, infrastructure, and business processes within the defined scope.

ISO 27001 Risk Management

Risk management is a fundamental part of ISO 27001. Organizations identify information security risks, evaluate their significance, determine appropriate treatment, and establish controls based on their circumstances.

This risk-based structure has similarities with NYDFS Part 500, which also requires covered entities to maintain a cybersecurity risk assessment.

The frameworks are not identical, however. ISO 27001 is an international management system standard, while NYDFS Part 500 is a regulatory requirement applicable to covered entities under New York's financial services framework.

ISO 27001 Annex A Controls

ISO/IEC 27001:2022 includes Annex A controls that organizations can consider when addressing information security risks. ISO/IEC 27002:2022 provides additional information on information security controls associated with the ISO 27001 framework.

The applicable controls depend on the organization's risk assessment, ISMS scope, and Statement of Applicability. Organizations do not simply need to adopt every Annex A control without considering their specific information security risks.

ISO 27001 Certification for Payment Companies

ISO 27001 certification provides independent third-party confirmation that an organization's ISMS has been assessed against the requirements of the standard.

For payment companies, certification can demonstrate that information security is managed through a structured ISMS and that relevant information security risks and controls are addressed within the certified scope.

However, ISO 27001 certification does not replace regulatory obligations established by NYDFS Part 500.

ISO 27001 and NYDFS Part 500: Where They Align

ISO 27001 and NYDFS Part 500 address several common cybersecurity and information security themes. These areas can provide opportunities for control mapping and reduction of duplicated processes.

Risk Management

Both ISO 27001 and NYDFS Part 500 place importance on identifying and evaluating information security or cybersecurity risks.

ISO 27001 establishes risk assessment and treatment within the ISMS, while NYDFS requires covered entities to maintain a cybersecurity risk assessment that is reviewed and updated as required by the regulation.

Information Security Governance

ISO 27001 establishes management responsibilities, policies, organizational processes, and oversight for information security.

NYDFS Part 500 similarly establishes cybersecurity governance requirements and responsibilities for covered entities. Payment companies can therefore identify areas where their existing ISMS governance processes overlap with NYDFS requirements.

Access Control

Access management is another significant area of alignment.

ISO 27001 includes controls relating to identity, authentication, access rights, and privileged access. NYDFS Part 500 contains requirements relating to access privileges and authentication, including MFA.

The organization must still verify the specific NYDFS requirements rather than assuming that an ISO 27001 control automatically satisfies the regulatory requirement.

Asset Management

Both frameworks recognize the importance of understanding information assets and the technology environment.

ISO 27001 addresses information and associated assets within information security management, while NYDFS Part 500 establishes specific asset management requirements.

For payment companies, maintaining a reliable inventory can provide a common foundation for both frameworks.

Vulnerability Management

ISO 27001 includes technological controls relating to vulnerabilities and technology security.

NYDFS Part 500 also establishes vulnerability management requirements. A payment company can map relevant ISO controls and processes against NYDFS requirements while separately verifying the regulatory requirements that apply to its environment.

Incident Management

ISO 27001 includes information security incident management controls.

NYDFS Part 500 also establishes incident response requirements, but NYDFS introduces specific regulatory notification obligations. This means an ISO 27001 incident management process may overlap with Part 500 while still requiring additional NYDFS-specific procedures.

Business Continuity

ISO 27001 includes information security continuity considerations.

NYDFS Part 500 contains more specific regulatory requirements concerning business continuity and disaster recovery, including requirements related to testing and recovery of critical systems and data.

Payment entities should therefore map common continuity controls while separately evaluating the specific NYDFS requirements.

Third-Party Security

Supplier security is relevant under both ISO 27001 and NYDFS Part 500.

ISO 27001 addresses information security within supplier relationships, while NYDFS establishes specific requirements for third-party service provider policies, due diligence, contractual provisions, and cybersecurity risk management.

Logging and Monitoring

ISO 27001 contains controls related to logging and monitoring.

NYDFS Part 500 also addresses cybersecurity monitoring. Payment entities can align monitoring activities across the ISMS and regulatory environment while verifying that the NYDFS requirements applicable to the organization are fully addressed.

ISO 27001 Controls Mapped to NYDFS Part 500

A practical ISO 27001 and NYDFS Part 500 mapping should focus on the actual requirements rather than simply matching similar terminology.

Cybersecurity governance: ISO 27001 establishes information security governance through the ISMS, organizational roles, policies, and management responsibilities. These areas can be mapped against NYDFS cybersecurity governance requirements.

Risk assessment: ISO 27001 requires organizations to assess information security risks and determine appropriate risk treatment. NYDFS Part 500 requires covered entities to maintain a cybersecurity risk assessment. These requirements can be aligned while retaining their separate purposes.

Access controls: ISO 27001 includes controls addressing identity management, authentication, access rights, and privileged access. NYDFS Part 500 similarly establishes requirements concerning access privileges and authentication.

Multi-factor authentication: ISO 27001 contains controls relevant to secure authentication and access management. These controls can contribute to an MFA environment, while the specific MFA provisions under NYDFS Part 500 must be evaluated independently.

Asset management: ISO 27001 addresses information and associated assets, while NYDFS Part 500 requires covered entities to maintain asset management practices. A reliable asset inventory can therefore serve multiple security and regulatory purposes.

Vulnerability management: ISO 27001 contains technological controls relating to technical vulnerabilities. NYDFS Part 500 establishes vulnerability management requirements. Relevant processes can be mapped against both frameworks.

Incident response: ISO 27001 addresses information security incident management. NYDFS Part 500 also requires incident response capabilities, but the regulation adds specific notification obligations that need separate consideration.

Business continuity: ISO 27001 addresses information security continuity, while NYDFS Part 500 establishes specific business continuity and disaster recovery requirements. Payment entities should evaluate both sets of requirements when establishing their control environment.

Third-party security: ISO 27001 addresses supplier relationships and information security requirements within supplier arrangements. NYDFS Part 500 establishes additional requirements specifically related to third-party service providers.

Logging and monitoring: ISO 27001 includes controls relating to logging and monitoring, while NYDFS Part 500 establishes monitoring requirements for covered entities. These areas can be mapped where the underlying activities satisfy the respective requirements.

Data protection: ISO 27001 includes controls related to information protection, data security, and privacy. NYDFS Part 500 focuses on protecting information systems and nonpublic information. Payment entities should evaluate the applicable data security requirements under both frameworks.

NYDFS Part 500 Requirements ISO 27001 Does Not Automatically Cover

The most important distinction between the two frameworks is that ISO 27001 certification does not automatically demonstrate compliance with NYDFS Part 500.

NYDFS-Specific Governance Obligations

NYDFS establishes governance requirements that are specific to covered financial services organizations.

An organization may already have information security leadership and governance under ISO 27001, but those arrangements must still be evaluated against the specific requirements of Part 500.

Regulatory Notifications and Reporting

NYDFS establishes cybersecurity event notification requirements that are not created by ISO 27001.

A qualifying cybersecurity event generally must be reported to NYDFS as promptly as possible and no later than 72 hours after the covered entity determines that the event occurred.

An ISO 27001 certificate does not replace this regulatory reporting obligation.

Annual Compliance Certification

Covered entities must submit the required annual cybersecurity compliance filing to NYDFS.

This regulatory filing is different from ISO 27001 certification. An organization cannot use its ISO 27001 certificate as a substitute for the required NYDFS filing.

NYDFS-Specific Cybersecurity Requirements

Part 500 contains detailed provisions relating to MFA, access privileges, cybersecurity training, incident response, business continuity, third-party service providers, monitoring, and other cybersecurity matters.

An ISO 27001 control may address part of a corresponding NYDFS requirement, but the organization must verify the exact regulatory requirements and conditions applicable to its operations.

Class A Company Requirements

The 2023 amendments introduced additional requirements for certain organizations classified as Class A companies under Part 500.

Organizations should determine whether they meet the regulatory criteria for a Class A company before concluding that their existing ISO 27001 control environment addresses all applicable NYDFS requirements.

ISO 27001 for NYDFS Compliance: Practical Approach

Define the Regulatory and ISMS Scope

Start by defining the scope of the ISO 27001 ISMS, including the relevant legal entities, business processes, information, systems, locations, technology, and third parties.

The NYDFS regulatory scope should then be determined separately based on the organization's regulatory status.

Identify Applicable Part 500 Requirements

Create a requirements register covering the NYDFS provisions that apply to the organization.

This should include cybersecurity governance, risk assessment, access privileges, MFA, asset management, vulnerability management, incident response, third-party security, monitoring, business continuity, regulatory notifications, annual filing obligations, and any applicable Class A requirements.

Map Relevant ISO 27001 Controls

Map the relevant ISO 27001 controls and ISMS processes against the applicable NYDFS requirements.

The objective is to identify genuine areas of overlap rather than assuming that similar terminology means the requirements are identical.

Identify NYDFS-Specific Obligations

Once overlapping controls have been identified, isolate the NYDFS requirements that require separate treatment.

These can include regulatory notifications, annual compliance filings, NYDFS-specific governance obligations, and requirements applicable to certain covered entities.

Establish Required Security Controls

The organization should determine which security controls, processes, technologies, responsibilities, and evidence are necessary to address the combined information security and regulatory requirements.

Maintain Compliance Evidence

Evidence should demonstrate how applicable security controls operate and how the organization addresses its regulatory responsibilities.

For NYDFS, supporting records can also be required for regulatory examination. Covered entities are required to maintain specified records for five years under Part 500.

Monitor Regulatory Changes

NYDFS requirements can change through regulatory amendments, official communications, enforcement actions, and other regulatory developments.

Payment entities should therefore monitor official NYDFS publications and evaluate whether regulatory changes affect their existing control mappings.

Review the ISMS and NYDFS Requirements Periodically

The relationship between an organization's ISMS and NYDFS obligations should be reviewed when there are material changes to business operations, technology, information systems, suppliers, products, or cybersecurity risks.

A new payment platform, cloud environment, third-party relationship, acquisition, or major technology change can alter the organization's regulatory and information security requirements.

NYDFS Cybersecurity Requirements for Payment Processors

Payment processors operate across complex technology environments involving transaction systems, customer information, APIs, networks, applications, cloud infrastructure, and third-party providers.

Protecting Payment and Customer Information

Payment companies may process customer information, transaction information, authentication data, and other sensitive information.

NYDFS Part 500 requires covered entities to maintain safeguards appropriate to the cybersecurity risks affecting their information systems and nonpublic information.

ISO 27001 can provide a structured ISMS framework for managing information security risks involving sensitive information.

Securing Payment Systems

Payment systems can include transaction applications, APIs, databases, cloud platforms, network infrastructure, administrative interfaces, and supporting systems.

These assets should be considered within the organization's cybersecurity risk management process and assessed according to their importance and risk.

Identity and Access Management

Payment environments often contain privileged accounts and systems containing sensitive information.

Access should be assigned according to business requirements and security risk. NYDFS Part 500 contains requirements relating to access privileges and MFA, while ISO 27001 contains related access and authentication controls.

Third-Party Payment Providers

Payment processors frequently rely on external technology and service providers.

Third-party relationships can include cloud service providers, payment platforms, software vendors, infrastructure providers, managed service providers, and other technology suppliers.

NYDFS Part 500 requires covered entities to maintain policies and procedures addressing third-party service provider cybersecurity risk.

Vulnerability and Penetration Testing

Vulnerability management is a significant NYDFS cybersecurity requirement, and Part 500 also includes penetration testing requirements.

Payment entities should establish the applicable testing scope, frequency, methodology, and evidence requirements based on the regulation and their technology environment.

ISO 27001 can provide a broader information security management structure around technical security activities, but certification itself does not demonstrate completion of every NYDFS testing requirement.

Security Monitoring

Payment organizations need visibility into security events across applications, infrastructure, accounts, networks, endpoints, and other critical systems.

NYDFS Part 500 contains requirements concerning cybersecurity monitoring, while ISO 27001 includes controls addressing logging and monitoring.

A coordinated monitoring environment can therefore contribute to both information security management and regulatory requirements.

Incident Response

Payment entities should maintain defined processes for detecting, analyzing, containing, responding to, and recovering from cybersecurity incidents.

ISO 27001 contains information security incident management controls. NYDFS Part 500 adds specific regulatory notification obligations, including the requirement to notify NYDFS of qualifying cybersecurity events within the applicable timeframe.

NYDFS Part 500 Compliance Checklist for Payment Entities

Payment entities reviewing their NYDFS Part 500 and ISO 27001 environments should consider the following areas:

• Covered entity status determined
• Applicable exemptions evaluated
• Cybersecurity program established
• Cybersecurity policy maintained
• Cybersecurity risk assessment maintained
• Risk assessment reviewed at required intervals
• CISO responsibilities defined
• Senior governance responsibilities addressed
• Asset inventory maintained
• Access privileges reviewed
• MFA requirements addressed
• Vulnerability management established
• Penetration testing requirements evaluated
• Incident response plan maintained
• Third-party service provider security addressed
• Logging and monitoring addressed
• Business continuity and disaster recovery requirements addressed
• Backup and restoration requirements addressed
• Cybersecurity awareness training addressed
• Regulatory incident notification requirements addressed
• Annual NYDFS filing requirements addressed
• Supporting records retained
• Class A company requirements evaluated where applicable

NYDFS provides regulatory resources and checklists describing requirements for covered entities, including annual risk assessment review, cybersecurity policy approval, access privilege review, cybersecurity training, and annual compliance filings.

ISO 27001 and NYDFS Part 500: Key Differences

ISO 27001 and NYDFS Part 500 should not be treated as identical frameworks.

ISO 27001 is an international standard for an Information Security Management System. It establishes requirements for managing information security risks through a systematic management framework.

NYDFS Part 500 is a New York cybersecurity regulation applicable to covered entities within the NYDFS regulatory framework.

ISO 27001 provides a risk-based management system that can be used across industries and geographic markets. NYDFS Part 500 contains requirements specifically applicable to covered financial services organizations.

ISO 27001 certification involves assessment of the organization's ISMS against the requirements of the standard. NYDFS compliance involves meeting the applicable regulatory provisions and maintaining the records and filings required by the regulation.

The two frameworks overlap in areas such as risk management, access control, asset management, incident management, supplier security, business continuity, and monitoring. NYDFS additionally contains regulatory obligations such as cybersecurity event notification and annual compliance filings that are not created by ISO 27001 certification.

Common NYDFS Part 500 Challenges for Payment Entities

Managing Multiple Regulatory Obligations

Payment companies can be subject to several cybersecurity, privacy, payment security, contractual, and financial-sector requirements.

Managing these obligations through a common control structure can reduce duplicated activities, but each regulatory requirement still needs to be evaluated according to its own scope and wording.

Maintaining Accurate Asset Inventories

Payment technology environments can include cloud infrastructure, servers, endpoints, APIs, databases, applications, network devices, and third-party platforms.

An incomplete inventory can make it difficult to determine whether cybersecurity controls cover all relevant systems.

Meeting MFA and Access Requirements

Payment organizations may have employees, administrators, contractors, service accounts, privileged users, and third-party users accessing sensitive systems.

NYDFS requirements concerning MFA and access privileges make identity and access management an important area for ongoing review.

Managing Third-Party Technology Risk

Payment ecosystems frequently depend on external technology providers.

A third-party provider can introduce risks involving data access, service availability, authentication, infrastructure security, incident response, and operational dependencies.

NYDFS Part 500 requires covered entities to address cybersecurity risks associated with third-party service providers.

Maintaining Continuous Monitoring

Cybersecurity risks can change between periodic reviews.

Payment entities therefore need appropriate monitoring capabilities that provide visibility into security events, suspicious activity, unauthorized access, and other indicators relevant to their environment.

Meeting Reporting and Documentation Requirements

A payment company can have established security controls while still needing to address specific regulatory evidence and reporting obligations.

This distinction is important when using ISO 27001 alongside NYDFS Part 500. An ISO 27001 certificate demonstrates conformity with the applicable ISO 27001 requirements within the certified scope, while NYDFS requires covered entities to address its own regulatory provisions.

Build stakeholder confidence through internationally recognized ISO/IEC 27001 Certification. Establish a structured approach to information security management. Contact INTERCERT to discuss your certification requirements.

Building an ISO 27001 Framework Around NYDFS Part 500 Requirements

Payment entities can structure their information security environment around ISO 27001 while separately addressing NYDFS Part 500 requirements.

The first stage is to establish the scope of the ISMS and identify the systems, information, processes, people, locations, and suppliers included within that scope. The organization can then determine which NYDFS requirements apply based on its regulatory status and business activities.

Relevant ISO 27001 controls can then be mapped against the applicable NYDFS requirements. The mapping should distinguish between genuine control overlap and NYDFS-specific obligations.

For example, ISO 27001 incident management controls may align with NYDFS incident response requirements, but the regulatory notification requirement remains a separate NYDFS obligation. Similarly, ISO 27001 access controls can overlap with NYDFS access management requirements, while the specific MFA and access privilege review requirements must still be evaluated against Part 500.

Evidence should be maintained for both the ISMS and the regulatory environment. The evidence should demonstrate how security controls operate, how responsibilities are assigned, how risks are managed, and how applicable NYDFS requirements are addressed.

The control mapping should also be reviewed when there are significant changes to the organization's business or technology environment. NYDFS requires risk assessments to be reviewed and updated at least annually and when material business or technology changes affect cybersecurity risk.

For payment entities, the objective is not to treat ISO 27001 and NYDFS Part 500 as interchangeable frameworks. Instead, ISO 27001 can provide a structured information security management foundation while NYDFS-specific requirements are separately identified, mapped, monitored, and evidenced.

Read More:
Cybersecurity for Smart Factories: ISO 27001 in Manufacturing
Securing Virtual Power Plants with ISO 27001 for DERs